Question

Following are the enzymes present in the intestinal juice. Which among the following is considered as a non-digestive enzyme?
A.Nucleotidase
B.Aminopeptidase
C.Enterokinase
D.Lipase

Answer 1

Hint: Succus entericus is also known as the intestinal juice which consists of a number of enzymes that help in the digestion of different nutrients in the body

Complete answer:
Small intestine is a part of the alimentary canal and is a very coiled structure. Its major function is to absorb the digested food. There are three parts - Duodenum, Jejunum and Ileum. Now let us analyse each and every option to find the correct answer.
Option A: Nucleotidase is a digestive enzyme that helps in the digestion of nucleic acids or nucleotides. Since nucleotidase is a digestive enzyme there for option A is incorrect.

Option B: Aminopeptidases help in the conversion of proteins into peptides and amino acids, it is a digestive enzyme, therefore option B is incorrect.

Option C: Enterokinase works as a catalyst in conversion of trypsinogen into trypsin which helps in the activation of all digestive enzymes therefore option C is correct. It is produced by duodenum cells and secreted by duodenum glands.

Option D: Lipase is a digestive enzyme that helps in the digestion of fats into fatty acid and glycerol it is found in the intestinal juice therefore it is a digestive enzyme. Hence, option D is incorrect.

Hence, the correct answer is option (C)

Note: The small intestine digest food into smaller and absorbable molecules that are absorbed by the blood through finger- like projections present in the small intestine that are known as Villi. The intestinal juice also contains enzymes which break down complex starch and carbohydrates into simple sugars like glucose.